Dental flask clamp



J. M. FILER AND S. E. RUPE.

DENTAL FLASK CLAMP.

APPLICATION min man. 11, I922.

1A35 826 Patmted Nov. M, 11922.

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ATTORN EY J. M. FILER AND S. E. RUPE.

DENTAL FLASK CLAMP. APPLICATION FILED mm. 1|. 1922.

Patented Nov. 1141, 11922.

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JOHN M. FILER AND STEPHEN E. BUTE, OF ALTOOLNA, PENNSYLVANIA.

:onn rar. FLASK CLAMP;

Application filed March 11, 1922. Serial No. 542,999.

T 0 all whom it may conccm:

Be it known that we, JOHN M. FILER and STEPHEN Fl. Horn, citizens of the United States, residing at Altoona, in the county of Blair and State of Pennsylvania, have invented new and useful Improvements in Dental Flask Clamps, of which the following is a specification.

This invention relates to the molding or casting arts, particularly to means for holding flasks, and has for its object the provision of a novel device for clamping in position flasks such as are used in the vulcanization of artificial dentures.

An important object is the provision of a clamping device of this character which is lever operated and which may therefore be very quickly and easily engaged'with the flask or flasks to be held in proper position, the device being provided with spring means interposed between the flasks and the locking lever.

Another object is the provision of a clamping device of this character which includes a frame of suitable shape and a can riage mounted thereon, this carriage being formed entirely of sheet metal cut and stamped and subsequently bent to shape whereby it may be engaged about the frame and held in proper position without the employment of rivets or other extraneous securing means.

An additional object is the provision of a device of this character which will be very simple and inexpensive in manufacture, which will also be a great time and labor saver in-use and which will also be efficient and durable in service.

iVith the above and other objects and advantages in view, the invention consists in the details of description to be hereinafter more fully described and claimed and illustrated in the accompanied drawings in which,

Figure l is a front elevation of the device showing it in use.

Figure 2 is a side elevation thereof.

Figure 3 is a plain view and,

Figure 4; is a view of the blank from which the carriage is formed.

Referring more particularly to the drawings we have shown our device as-comprising an upstanding frame 10 formed of suitable material preferably steel and having the free ends of its arms laterally directed toward each other as indicated at 11. The

flask A containing the artificial dentures to be vulcanized as for instance in the making of artificial teeth, are placed within this frame 10. It will be observed that a plurality of these flasks may be arranged in superposed relation so that several different pieces of work may be accomplished at the same time. Slidably mounted upon the upper portion of the frame 10 is a carriage structure designated broadly by the numeral 12 and consisting of a base portion which extends across the open upper end of the frame 10, this base portion being formed with a longitudinal slot l t for a purpose to be described. The ends of this base portion are bent downwardly as indicated at 15 and it will be observed that these end portions are formed with tongues 16 which are bent to partially encircle the sides of the frame 10 for constituting a guide. The side edges of the base portion 15 are extended upwardly as shown to define spaced flanges 17 between which is pivoted, as shown at 18, a locking lever 19 which is formed with a cam head 20 which passes through the slot 14 in the carriage structure and which is engageable with superposed bowed springs 21 which are disposed on top of the uppermost flask. I

. it is of course conceivable that the carriage device 12 might be formed in a wide variety of ways and that it might be formed by casting, though in actual practice we prefer to construct it of metal, the blank being formed as indicated in Figure a and the subsequent operations or steps in the core struction being merely a matter of heading); to produce the form indicated. The advantage of this structure is that it is absolutely unnecessary to use rivets, bolts or other extraneous securing devices the provision of the tongues 16 which are bent upon themselves in partially encircling relation to the sides of the clamp will provide the necessary holding means.

Assuming that the device has been constructed and assembled as above described. it will be seen that whenever it is desired to clamp flasks in position for vulcanizing, it is merely necessary that the flask be engaged within the frame 10, the bowed leaf spring 21 be placed in position and then the locking); lever 19 be swung to bring the cam head 20 into engagement with the uppermost spring member 21 for exerting the clamping action. It is of course apparent that any suitable Q Li number of the bowed springs 2'1. maybe used or that in case of necessity a iiller block might be used in conjunction with the spring, the block to take the place at one of the flasks shown in the drawings so that the proper clamping action may still be 21 whereupon the flask may be very readily removed from the confines of the frame 10.

From the toregoii'ig description and a study of the drawings it will be readily apparent that we have thusprovided an extremely simple and consequently inexpensive device for holding flasks used in dental work, theconstruction and arrangement of the parts of the clamp being such that the flask may be quickly and easily placed in position and be clamped in such position without any possibility of accidental displacement which might result in serious injury to the work being done. Owing to-the simplicity of the construc'tion'and the fewness of the parts it is apparent that there is nothing at all toget out of order and that the device should consequently have a long life and satisfactorily.perform all the func tions for which it is intended.

lWhile we have shown and described the preferred embodiment of the invention it is or course to be understood that we reserve the right to make such changes in the term, construction and arrangement of: parts as will not depart from the spirit of the invention or the scope of the subjoined claims.

Having thus described the invention we claim;

l. A clamping device for molding flasks comprising an upstanding U-shaped frame having the free ends of its arms directedto ward each other, said frame being designed to receive a plurality of flasks arranged in superposed relation, a pair of oppositely disposed bowed spring, members engaged upon the uppermost flask, a carriage member slidably mounted upon said frame, and locking means. carried by said carriage member and engageable with the adjacent spring member.

.2. A clamping device for molding flasks comprisingan upstanding U-shaped frame having the free ends of its arms directed toward each other, said frame being designed to receive a' plurality of flasks arranged in superposed relation, a pair of oppositely ranged bowed spring members disposed upon the uppermost flask member, a carriage member slidably engaged upon said frame and including upstanding, flanges, said riage member being formed with guides enrelation, a carriage member formed of a plate having its longitudinal edges eXtended'upwardly to dehne spaced parallel flanges and having its ends extended downwardly and terminating in tongues embracingly engaging the sides of the frame, a carriage memberhaving its bottom portion formed with an elongated slot, and a locking lever pivoted between said flanges and having one end termed as a handle and having its other end formed as a cam head passing through said slot and engaging the uppermost one of said spring members. I

In testimony whereof we aflixour ignatures.

JOHN M. FILER. STEPHEN E. RUPE. 

